/Engine/Source/Editor/PropertyEditor/Public/DetailCategoryBuilder.h
Adds an entire external object to this category. The object should not be one of the objects already visible by this details panel
A property row for customizing the property or NULL if the property could not be found
[IDetailPropertyRow](API\Editor\PropertyEditor\IDetailPropertyRow) * AddExternalObjects ( const [TArray](API\Runtime\Core\Containers\TArray)< [UObject](API\Runtime\CoreUObject\UObject\UObject) * > & Objects, [EPropertyLocation::Type](API\Editor\PropertyEditor\EPropertyLocation__Type) Location, const [FAddPropertyParams](API\Editor\PropertyEditor\FAddPropertyParams) & Params )